MoniqueCranson88 MoniqueCranson88
  • 22-08-2015
  • Mathematics
contestada

Which of the following equations has both 1 and −3 as solutions?
a. X2 – 2x – 3 = 0
b. X2 + 2x – 3 = 0
c. X2 – 4x + 3 = 0
d. X2 + 4x + 3 = 0

Respuesta :

cclemeno cclemeno
  • 22-08-2015
X2+2x-3=0
factor
(x+3) (X-1)=O
set each factor to 0
x+3=0
x= -3

x-1=0
x=-1   

therefore b is the correct answer

hope this helps
Answer Link
Аноним Аноним
  • 22-08-2015
The answer is B)

x2+2x−3=0

Factor left side of equation.

(x−1)(x+3)=0

Set factors equal to 0.

x−1=0 or x+3=0

x=1

or

x=−3

Answer Link

Otras preguntas

Find the least common denominator (LCD) for the fractions. 1/6 and 3/10 A. 2 B. 10 C. 30 D. 60
Imagine an astronaut with a mass of 70 kg floating in space 10.0 m away from the center of gravity of an Apollo command module whose mass is 6.00× [tex] 10^{3
What is 50/100 in decimal
Which of the following is not a true statement regarding the writing process? A. It can be used to develop any type of writing. B. It can guide the author from
solve and graph -4 + 2t - 14 - 18t > -6 - 100t
Imagine an astronaut with a mass of 70 kg floating in space 10.0 m away from the center of gravity of an Apollo command module whose mass is 6.00× [tex] 10^{3
a quadratic equation with a negative discriminant has a graph that ? plz help
6) Lunch furnishes 8 mg of the minimum daily requirement (MDR) for iron, while the other meals furnish 10 mg of the MDR. Write the ratio (in lowest terms) of th
what is the x and y intercept of the parabola y=x^2-6x+10 and ow do you graph the equation
a quadratic equation with a negative discriminant has a graph that ? plz help